johnston



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s. Jomlsrolv.V HARVESTER BAKE. No. 295.872.- Patented Mar. 25, 1884.

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JOHNSTON.

HARVESTER BAKE. No. 295,872. Patented Mar. 25, 1884.

41415193# l IWQJUZOE ilNrTnn STATns PATENT Ormea.

SAMUEL JOHNSTON, OE BROOKPORT, NEW YORK.

HARVESTER-RAK.

SPECIFICATION forming part of Letters Patent No. 295,872, dated. March 25, 1884.

Application filed September 2l, 1883. (No model.)

.To all whom, it may concern:

, Beit known that I, SAMUEL JOHNSTON, of Brockport, county of Monroe, and lState of New York, have invented an Iinprovementin Harvester-Rakes, of which the following is a specification. Y

My invention has reference to harvesterrakes in general, but more particularly to that class known as automatic rakes, in which certain of the rake-arms may be raised sooner than others; and it consists in certain improvements fully set forth in the following specification and shown inthe accompanying drawings, which form part thereof.

The object of my invention is to simplifythe construction of harvester-rake mechanism, increase its strength, and protect the cams and switch mechanism from cloggingwith straws, &c.

In the drawings, Figure l is an elevation of my improved harvester-rake, showing` part of the hood broken away and three of the rakearms removed. Fig. 2 is a plan View of same with part of the hood broken away and all of the rake-arms in position; and Fig. 3 is a perspective view of the'standard with part broken away to exhibit the automatic switch deviceV A is the standard or pedestal, and consists of a hollow cast-iron pillar closed on the top and provided with a pin, B. Around its circumference it is provided with the camway I, extending substantially its full height, whereby great leverage may be had to lift the rakearms. In addition to the ordinary camway, I, this standard is provided with an auxiliary' camway, I', which is adapted to cause the rake to continue to move horizontally for a greater length of time when 4at its lowest position, and this auxiliary camway connects with the camway I by means of switches M and M3, of which switch M is provided` with an extension. M', with which the roller running in the auxiliary camway comes in contact, to automatically close said switch, and switch M3 falls back by gravity, or is pulled back by a spring and closes the auxiliary camway, completing the main camway I as soon as the roller K has entered the latter after passing out of the said auxiliary caniway, as fully set forth hereinafter;

C is the hood or cap, and is pivoted upon pin B, and extends down, as shown, to cover the standard-camways I I' partly or wholly. The top of said hood C is provided with supports D for the rake-arms E, and to which they are pivoted. The bottom of said hood is furnished with cogs F, with which the wheel G meshes, the latter being secured to the powery lifting-links L, the upper ends of which are` pivoted to the rake-arms E, as shown. The links L reciprocate vertically thron gh the apertures C in the hood C.

The switch M is secured to the rock-shaft N, provided with an arm, N', and is normally keptclosed by a spring, O, aboutshaft N.

' I? is'a locking-arm, having catch p, and is secured to the rock -shaft Q, which extends through the standard, and has the :arm S secured upon its end. This shaft Qis kept normally in a position, so that the arm P catches arm N' by means of a spring, R.

T is an actuating-trip ,on the periphery of the hood, and so located as to strike the arm S to free the arm N' and the switch M. A solid piece, M2, is arranged between switch M3 and switch M to give strength.

The operation is as follows: As the hood is rotated by the wheel G, it carries the rakearms with it, and the arms J drag the rollers K around in the cainways I and I', and all of these rollers K will run up the switch M, remaining in the camway I until the projection "I strikes the arm S, when the arm P is withdrawn, allowing the shaft N to be rotated and the switch M raised, as indicated in dotted lines, Fig. 1, and the next roller,K,`will then pass under switch and run up on caniway I', andthis rake-armrises at alater period. As the roller K rises in camway I', it strikes the extension ll on the switch M and automatically ,closes it before the next roller comes into action, and as the roller still ascends it raises the switch M3 and passes to the original camway I again, the said switch M3 falling back in place when relieved.

lThe latching mechanism is entirely inclosed` within the hollow standard, and hence is fully protected, and may be inspected through a door in lthe side, and the great rise or throw of the camways enables a great leverage upon the rake-arms E, andyhence lifts them easily'.

WhileI prefer the construction shown, I do not limit myself thereto, as it maybe modified in various ways Without departing from my invention.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

l. A supporting-standard for the rake-head, made of large diameter, and provided on its circumferential surface with a rake-actuating camway, so shaped or formed Vthat lines at right angles from the center of said standard through the actuating-surface of the camway shall lie in horizontal planes, substantially as and for the purpose specified.

2. A supporting-standard for the rake-head, made of large diameter, and provided on its circumferential surface with a rake-actuating camway, so formed that lines radiating at right angles from the center of said standard through the actuating-surface of said camway shall lie in horizontal planes, in combination with a rake-head, rakes, al hood carried by said rakehead, and covering said camway, rollers running in said camway and carried by said hood or rakehead, and connecting mechansim between said rollers and Yrakes, substantially as and for the purpose specified.

3. -A supporting-standard for the rake-head, made cylindrical, provided with a journal or pin on its top and amain camway of great pitch upon its circumference, and an auX- iliary camway, in combination with automatic switching .devices, by which said auX- iliary camway is opened or closed to the main camway, a rake-head, rakes, a hood inclosing said camways, rollers arrangedto run in said camways and carried by said hood or raketeeth F on its bottom, wheel G, rakes E, arms J, rollers K, and links L, substantially as and for the purpose specified.

6. The combination of standard A, having caniway I, camway I', switch M, having eX- tension M', mechanism to'actuate said switch, switch M3, and pin B, with hood C, rakes E, arms J, rollers K, and links L, substantially as and for the purpose specied.V

7. The combination of standard A, having camway I, camway I', switch M, having eX- tension M', mechanism to actuate said switch, switch M, shaft N, having arm N', spring O, shaft Q, having arm P, spring B, arm S, and

.lug T, pin B, with hood C, rakes E, arms J, .rollers K, and links L, substantially as and for the purpose specified.

8. The combination of oamway I, hood C, means to support said hood, rake-arms E, arms J, rollers K, and links L, substantially as and for the purpose specified. c

In testimony of which invention Ihereunto set my hand.

SAMUEL J OHNSTON.

Vitnesses:

H. B. ZEvELY, ERNEST SHOBER 

